Product Description
Foxboro 43AP‑FA52C/PC‑00 (Schneider Electric legacy) is a Field‑mount Pneumatic PID Indicating Controller from 43AP series.
Model code explanation:
‑ 43AP: Pneumatic indicating controller
‑ F: Field pipe / yoke mount
‑ A5: PID three‑mode control (Proportional‑Integral‑Derivative)
‑ 2: 3‑15 psi pneumatic output with 0‑30 psi gauge
‑ C: Bumpless auto‑manual transfer with balance gauge and internal regulator
‑ PC: Bellows‑type pressure receiver for 3‑15 psi input signal
‑ 00: Range code
It receives 3‑15 psi pneumatic input from remote transmitters, provides local pointer indication, set‑point adjustment and PID computation. Output is standard 3‑15 psi to drive pneumatic control valves. Fully pneumatic, intrinsically safe for hazardous areas without electrical power. Available stock includes new surplus and fully‑tested refurbished units. No direct OEM replacement; same‑unit replacement is required for maintenance.
Technical Specifications
| Item | Specification |
|---|---|
| Full Model | 43AP‑FA52C/PC‑00 |
| Product Type | Field‑mount Pneumatic PID Indicating Controller |
| Control Algorithm | PID three‑mode (P+I+D) |
| Input Signal | 3‑15 psi (20‑100 kPa), bellows receiver PC |
| Output Signal | 3‑15 psi pneumatic output, 0‑30 psi gauge |
| Supply Air Pressure | Nominal 20 psi (140 kPa); operating 115‑155 kPa |
| Indication Accuracy | ±0.5% FS |
| Repeatability | ≤0.2% FS |
| Air Consumption | 0.5 m³/h (0.3 cfm) at standard condition |
| Auto‑Manual Transfer | C‑version: bumpless A/M switch, balance gauge, built‑in regulator |
| Mounting | Field pipe or yoke bracket mounting |
| Enclosure Rating | IP53 / NEMA 3, fiberglass‑reinforced polyester housing, dust‑and‑rain‑resistant |
| Operating Ambient Temp | ‑30℃ ~ +70℃ |
| Storage Temperature | ‑40℃ ~ +80℃ |
| Supply Medium | Clean dry instrument compressed air |
| Weight | Approx. 4.8 kg |
| Country of Origin | USA |
Product Application
- Intrinsically‑safe closed‑loop process control for petrochemical, oil‑gas hazardous areas, no electrical power required.
- PID regulation for pressure, flow, level and temperature loops, output to operate pneumatic diaphragm control valves.
- Local on‑site indication, set‑point adjustment and auto/manual operation for legacy field‑mount pneumatic systems.
- Spare‑part replacement for decommissioned plants; suitable for high‑EMI and explosion‑prone sites.
Related Series Models
‑ 43AP‑FA42C/PC‑00: PI control without derivative action
‑ 43AP‑FA52C/TA‑1A: Thermal bulb temperature‑element variant
‑ 43AP‑FB52C/PC‑00: Panel‑mount PID controller
‑ 43AP‑FA52C/PB‑BA: Spiral‑tube pressure‑element version
‑ SRD991: Foxboro smart electro‑pneumatic positioner, modern retrofit alternative
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